Explosive-engine.



L. A. PRAYER & W. J. MILLER.

EXPLOSIVE ENGINE.

APPLICATION FILED AUG. 3, 100a.

. Patented Sept. 13, 1910.

wit" wan I To all whom. it may concern:

j 7 srArEs PATENT ()131 i"i(3131.

LEE 5. FBAYEB, OF OOLUMBUS,' AND WILLIAM J. MILLER, F SPRINGFIELD,OHIO,'.;

ASSIGHORS, BY MESNE ASSIGNMENTS, TO THE KELLY MOTOR SPRINGFIELD, OHIO, ACORPORATION OF OHIO. c

TRUCK COMPANY, OI

mnosrvn-nuemn.

Be it known that we, LEE A. Fauna, a

' citizen of the United States, residin at C0- lumbus, in the county ofFranklin, tate of Ohio, and WILLIAM J. Mum, a citizen of the UnitedStates, residin at Springfield, in the county of Clark an State of Ohio,have invented certain new and useful Improvements in Explosive-Engines,of which the following is a specification.

This invention relates to improvements in explosive engines.

The objects of the-invention are to rovide improved means for coolingthe va ves and cylinders.

The invention consists in the constructions' and combination of partshereinafter described and set forth in the claims.

In the accompanyin drawings, Fi ure 1 is a side elevation part y insection 0 a device embodying this invention. Fig. 2 is a verticalsectional view through one of the c linders, its air jacket, supply andexhaust c ambers and connected parts. Fi 3 is a side elevation of aortion of the air jacketof one of the cylin ers. Fig. 4 is a bottom'plan view of the air. jacket. Fig. 5 is a detail view of the fan showingt hub and 1 projections.

Like parts are represented by similar spective cylinders o characters ofreference in the several views.

In the said drawin a a represent the rethe engine, four of which areshown in the present instance.

a is the piston connected in the usual way with the crank-shaft.Connected integrally with the upper end of the c linder and opening'theremto is the com nstion chamber, (1?, in the walls of which are theoutlet and inlet openings communicating, respectively, with the supplyand exhaust chambers, a a, arranged o posite each other in the resentinstance. T eseo enings are closed by the spring-pressed va ves, a. a, oerated in the usual way. Bolts, a secure 8 e valve chambers to thecombustion chamr. Surrounding the cylinder and combustion chamber is anair jacket or casing, I), having olpenings b and b o posite the openingsin t e combustion cham er to permit the insertion of the exhaust andsupply chambers.

This airsjacket fits snugly about the exhaust and supply chambers, whichchambers are Specification of Letters l'atent. Application filed au ust3, 1908. Serial No. 446,550.

chamber has a series of o ranged above and on the si es of saidcham-Patented Sept. 1 3, 1910.

7 provided, res ectivel y, with shoulders 'or anges, a. an a fittingclosely against the outside of the said air-jacket; the bolts, 0, whichsecure the parts together passing through these flanges and theair-jacket and bein secured in the walls of the com- .bustion c amber.The air-jacket is further and communicating therewith is an air-conduit,b, adapted to receive a supply of air from a fan, c, of any suitableconstruction,

secured to the starting shaft, d, which starting shaft is cared to thecrank shaft f of the angle. 0 air jacket is sufiicient-ly removed fromthe cy inder and combustion. chamber to permit the free passage .of theair about these parts, but the lower part of the air-jacket is part1closed by the lower series of spines or spi es, b, so as to form ineffect a series of openings, b, at the lower end of the air-jacket toretard the passage of the air, so as to cause aeo iderable portion of itto pass out aroun d the exhaust valve chamber, which is one of the mosthighly heated portions of an en 'ne of this character. The flange, a, oft e exhaust ber, and formed inthe air jacket and adapted toregisterwiththese openmgs, a. ,is-a series of openings, 6. Also located in the airjgcket directly beneath the exhaust chamr is a second series ofopenings, b. By

this construction it will be seen that a con? siderable portion of theair is dischar e completely about the exhaust valve chamie'r through theseries of openings before the air has become heated to a extentffrom theother parts, the remain er of the air passing down about the cylinderand through the openings, 1).

Having thus described the invention, we claim:' r

1. In a hydrocarbon engine, the combination with a cylinder, of a jacketwhich parmngs, a", ar-

tially incloses said cylinder, an air conduit which communicates Withsaid jacket at the top of the cylinder, said air jacket being closedwith the exception of a few small openings at the bottom thereof, and avalve casing also surrounded by said air jacket, said air jacket havinga number of openings formed in the wall thereof adjacent said valvecasing.

2. In a gas engine, the combination with a plurality of cylinders, andair jackets partially inclosing each of said cylinders, a fan, a conduitleading from said fan and extending along the tops of all of saidcylinders, said conduits being in communication with each of the airackets at the top thereof, valve casings also inclosed by said airjackets, said air jackets having a number of openings formed in thewalls thereof adjacent said valve casings, and said air jackets beingclosed at their bottoms with the except-ion of a few small openings tothereby cause the major portion of the air from the conduit to pass outaround the valve casings.

3. In a gas engine, the combination with a plurality of cylinders, ofair jackets par- Win34 tially inclosing each of said cylinders, a fan, aconduit leading from said fan and extending along the tops of all ofsaid cylinders, said conduits being in communication with each of theair jackets at the top thereof, valve'casings also inclosed by said airjackets, said air jackets having a num'- LEE A. FRAYER. WILLIAM J.MILLER.

Vitnesses as to Lee A. Frayer:

Gno. RIGIITMIRE, A. RAGERT. Vitnesses 'as to William J. Miller:

CHAS. I. Wanna, MARJORIE Sf MORROW.

